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Level 1 Radiographer
Skilled Needed to pass La State Test
| Question | Answer |
|---|---|
| Aluminium will protect you from what type of radiation. | Beta |
| Paper will protect you from what type of radiation | Alpha |
| What is a moderator | A material which slows down nuetrons |
| Who is responsible for safety | Everyone |
| At what speed do gamma rays travel | 186,000 mph or Speed of Light |
| What does the term TLD stand for? | Thermoluminescent Dosimeter |
| What is the best form of shielding for gamma radiation | Lead |
| List three routes of entry | Inhalation, Injection, Ingestion |
| List three types of radiation | Gamma, Alpha, and Beta |
| The Quality Factor for Alpha Rays | 20.00 |
| The Symbol mR means? | Milliroentgen |
| Atoms that have excess energy and are unstable are know as? | Radiactive |
| Activity is measured in | Curies |
| The Quality Factory for X-Rays | 1 |
| The Roentgen (R) exposure is measured in | Air |
| The acronym rad means | Radiation absorbed dose. |
| Elementary particle units with a negative electrical charge and a mass approximately equal to 1/1840 that of a proton are | Electrons |
| Positively charged elementary particles with a mass approximately equal to 1840 times that of an electron, or 1 AMU are know as. | Protons |
| The Fact that gasses bombarded by ionizing radiation become conductors of electrical current make them useful in. | Detection Equipment |
| A tube through which the radioactive source travels when inside a radiographic exposure devices | S tube |
| The process that results in the removal of orbital electrons from atoms resulting in the formation of ion pairs in called. | Ionization |
| Any byproduct material that is encased in a capsule designed to prevent leakage or escape of the byproduct material is. | Sealed Source. |
| An analog survey meter must be calibrated on each scale at two points approximately. | 25% and 75 % of the scale potential. |
| The area knows ass the center of the atom is known the? | Nucleus |
| Becquerels and curies are units of measurements of | Decay Rate |
| Uncharged elementary particle with a mass nearly equal to that of a proton are called. | Neutrons |
| Positively charged elementary particles with a mass approximately equal to 1840 times that of an electron or 1 AMU are knows ass? | Protons |
| A survey meter must be capable of measuring a range of. | 2 to 1000 MR/H (0.02 to 10 mSv/H) |
| A dosimeter must be capable of reading a rage of | 0-200 mR (0-2 mSv) |
| A film badge/TLD records what? | Total dose history for the period won? |
| When performing radiography in a permanent radiographic installation equipped with an area monitor the technical is not required to. | Wear a rate Alarm |
| What dosimeter (dosimetric devices) are least affected by moisture. | TLDs |
| A direct reading ionization chamber such as a dosimeter has the advantage of providing an? | Immediate dose history since last time charged. |
| A Rt Tech survey meter is showing "O" near he source it can safely be assumed that? | The meter is in an inoperable state and the radiographer should retreat from the source until an operational metter has replaced the suspect meter. |
| Survey Meters must be calibrated at intervals not to exceed | 6 months or Semi Annually. |
| Label or Surface Radiation Level | Radiation Level a 1 Meter |
| White 1 | Does not exceed 0.5 mrem/HR. Not applicable. |
| Yellow 2 | Does not exceed 50 mrem/hr AND Does not exceed 1 mrem/hr |
| yellow 3 | Exceeds 50 mrem/hr OR Exceeds 1 mrem/hr |
| Assuming a source has a half life of 20 years how old would the source in 3 half lives..? | 60 years old |
| The ball on a source assembly that prevents the source from exiting through the back of the camera is called. | Safety stop ball. |
| If a radiographer has 60 mR (0.6 MsV) at the surface of the exposure device, what would the reading be after 2 half lives? | 15 MR (0.15 mSv) |
| Emission of gamma rays, alpha rays, and beta rays is considered what? | Characteristics of source decay. |
| To penetrate a thicker or denser material you would need a source with. | More energy (shorter wavelength) |
| The use of 4 half-value layers will reduce the exposure by a factor of. | 16 times 100/2 square |
| The elements weight is the | A number |
| An element is identified by the number of _____________ in the nucleus. | Protons |
| The first indication of an extremity radiation overexposure is. | Reddening of the skin |
| Gamma radiation has a shorter wavelength that visible light therefore making it. | More Penetrating. |
| A sealed source emits what? | Gamma Rays |
| Full deflection of a survey meter while on battery check means? | Meter may or may not be working property. |
| A radiographer survey meter is showing "o" near the source it can safely be assumed.. | The meter is an inoperable state the radiographer should retreat from the source until an operational meter has replaced the suspect meter? |
| A radiographer read 7.5 on the 10x scale of the survey meter. What is the current dose rate at the position? | 75 mR/h |
| Rate alarm must be calibrated at intervals not to exceed. | Yearly |
| Dosimeters must be calibrated at intervals not to exceed. | Annually |
| You must notify NRC in writing _______ after a failed lead test has been determined. | Within three days |
| Applied amperage across the filament in an X ray tube has a direct bearing on producing more or less. | Penetration |
| An X-Ray cabinet must comply with unrestricted area requirements. The maximum amount of radiation emitted from the cabinet at 1.97 (5cm) shall not exceed. | 1 mR/h (10 uSv/h) |
| A source must be leak tested? | |
| Sources being transported from storage to a field location must NOT be | Left alone in a Vehicle with a no functioning alarm. |
| A survey instrument must be capable of an accuracy of. | -+20% |
| While in a field setting, radiographer is conducting using a 300KV X Ray systems. What is the Minimum boundaries needed? | High Radiation Area and Radiation Areas |
| At completion of an X ray exposure and turning the system to standby. | You may approach the immediately without fear of exposure. |
| Typically the exposure duration is controlled by? | Automatically via an integrated timer. |
| How often must source be physically inventoried? | 3 months |
| High speed electrons striking a target produce primarily what? | Heat |
| X-Ray machines work on the principle of bremsstrahlung or braking. Which components is not required to produce this effect? | Focusing cup |
| When high speed electrons strike a hard surface (target) which is not a result? | Neutrons Beams |
| A none declared pregnant radiographer or assistant may receive no more that. | 5 R per year (50 mSv) or 5000RM |
| Your survey meter has become inoperable. You must | Follow company operating and emergency procedures |
| What is the maximum surface reading for a YELLOW II labled shipping container? | 50 MR/H (500 uSv/H) |
| Which government agency regulates the transportation of Type A radioactive containers? | DOT |
| What is the maximum surface reading for a source changer? | 200 mR/H (2000 uSv/H |
| Exposure devices must be maintained prior to use? | And every three months |
Created by:
JustinRH
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